Estoy tratando de anidar el valor de eth0 dentro de este objeto JSON

"addresses": {
  "eth0": [
    "10.0.3.188"
  ]
},

Estaba usando underscore.js para simplificar el proceso

var _ = require('underscore')._;

var jsonData = {
    "plays": [{
        "play": {
            "id": "d10aae34-6713-4e14-8ad5-fa2fbf6aa2b5",
            "name": "lxc"
        },
        "tasks": [{
                "hosts": {
                    "lxc.server.com": {
                        "_ansible_no_log": false,
                        "_ansible_parsed": true,
                        "changed": true,
                        "cmd": "lxc copy base \"bar69\"",
                        "delta": "0:00:01.417533",
                        "end": "2017-01-10 18:01:28.692981",
                        "invocation": {
                            "module_args": {
                                "_raw_params": "lxc copy base \"bar69\"",
                                "_uses_shell": true,
                                "chdir": null,
                                "creates": null,
                                "executable": null,
                                "removes": null,
                                "warn": true
                            },
                            "module_name": "command"
                        },
                        "rc": 0,
                        "start": "2017-01-10 18:01:27.275448",
                        "stderr": "",
                        "stdout": "",
                        "stdout_lines": [],
                        "warnings": []
                    }
                },
                "task": {
                    "id": "297bf7b7-9ee7-4517-8763-bc3b15baa6e2",
                    "name": "clone from base"
                }
            },
            {
                "hosts": {
                    "lxc.server.com": {
                        "_ansible_no_log": false,
                        "_ansible_parsed": true,
                        "changed": true,
                        "cmd": "lxc config set \"bar69\" security.privileged true",
                        "delta": "0:00:00.053403",
                        "end": "2017-01-10 18:01:32.270750",
                        "invocation": {
                            "module_args": {
                                "_raw_params": "lxc config set \"bar69\" security.privileged true",
                                "_uses_shell": true,
                                "chdir": null,
                                "creates": null,
                                "executable": null,
                                "removes": null,
                                "warn": true
                            },
                            "module_name": "command"
                        },
                        "rc": 0,
                        "start": "2017-01-10 18:01:32.217347",
                        "stderr": "",
                        "stdout": "",
                        "stdout_lines": [],
                        "warnings": []
                    }
                },
                "task": {
                    "id": "bc63ad6f-1808-48b8-a1de-729153d2b0c5",
                    "name": "Promote to privileged ct"
                }
            },
            {
                "hosts": {
                    "lxc.server.com": {
                        "_ansible_no_log": false,
                        "_ansible_parsed": true,
                        "actions": [
                            "start"
                        ],
                        "addresses": {
                            "eth0": [
                                "10.0.3.188"
                            ]
                        },
                        "changed": true,
                        "invocation": {
                            "module_args": {
                                "architecture": null,
                                "cert_file": "/root/.config/lxc/client.crt",
                                "config": null,
                                "description": null,
                                "devices": null,
                                "ephemeral": null,
                                "force_stop": false,
                                "key_file": "/root/.config/lxc/client.key",
                                "name": "bar69",
                                "profiles": null,
                                "source": null,
                                "state": "started",
                                "timeout": 30,
                                "trust_password": null,
                                "url": "unix:/var/lib/lxd/unix.socket",
                                "wait_for_ipv4_addresses": true
                            },
                            "module_name": "lxd_container"
                        },
                        "log_verbosity": 0,
                        "old_state": "stopped"
                    }
                },
                "task": {
                    "id": "466c0da9-6cbf-4196-aea9-109218c3ed5f",
                    "name": "Start CT"
                }
            },
            {
                "hosts": {
                    "lxc.server.com": {
                        "_ansible_no_log": false,
                        "_ansible_verbose_always": true,
                        "changed": false,
                        "invocation": {
                            "module_args": {
                                "msg": [
                                    "10.0.3.188"
                                ]
                            },
                            "module_name": "debug"
                        },
                        "msg": [
                            "10.0.3.188"
                        ]
                    }
                },
                "task": {
                    "id": "978c490e-59c3-41d2-818d-ab4b557ad803",
                    "name": ""
                }
            }
        ]
    }],
    "stats": {
        "lxc.server.com": {
            "changed": 3,
            "failures": 0,
            "ok": 4,
            "skipped": 0,
            "unreachable": 0
        }
    }
}

Esto es lo que he intentado hasta ahora, ¡pero no tuve suerte!

console.log(_.findKey(_.values(jsonData.tasks)));

Tu ayuda es altamente apreciada

3
Deano 11 ene. 2017 a las 02:41

4 respuestas

La mejor respuesta

Puede usar algunas funciones como _.pluck () para obtener los objetos en la clave host , _.property () para ver si cada objeto host tiene una dirección clave , .map () para obtener una asignación de los valores, ._ filter () para ver si se devolvió un valor de la asignación, etc .:

var hosts = _.pluck(jsonData.plays[0].tasks, 'hosts');
var mapping = _.map(hosts, function(host) {
    var keys = _.keys(host);
    if (_.size(keys)) {
      var nestedHost = host[_.first(keys)];
      if (_.property('addresses')(nestedHost)) {
        if (_.property('eth0')(nestedHost.addresses)) {
          return nestedHost.addresses.eth0[0];
        }
      }
    }
  });
console.log(_.filter(mapping));

Véalo en acción en este plunker, así como en el siguiente ejemplo:

var jsonData = {
  "plays": [{
    "play": {
      "id": "d10aae34-6713-4e14-8ad5-fa2fbf6aa2b5",
      "name": "lxc"
    },
    "tasks": [{
      "hosts": {
        "lxc.server.com": {
          "_ansible_no_log": false,
          "_ansible_parsed": true,
          "changed": true,
          "cmd": "lxc copy base \"bar69\"",
          "delta": "0:00:01.417533",
          "end": "2017-01-10 18:01:28.692981",
          "invocation": {
            "module_args": {
              "_raw_params": "lxc copy base \"bar69\"",
              "_uses_shell": true,
              "chdir": null,
              "creates": null,
              "executable": null,
              "removes": null,
              "warn": true
            },
            "module_name": "command"
          },
          "rc": 0,
          "start": "2017-01-10 18:01:27.275448",
          "stderr": "",
          "stdout": "",
          "stdout_lines": [],
          "warnings": []
        }
      },
      "task": {
        "id": "297bf7b7-9ee7-4517-8763-bc3b15baa6e2",
        "name": "clone from base"
      }
    }, {
      "hosts": {
        "lxc.server.com": {
          "_ansible_no_log": false,
          "_ansible_parsed": true,
          "changed": true,
          "cmd": "lxc config set \"bar69\" security.privileged true",
          "delta": "0:00:00.053403",
          "end": "2017-01-10 18:01:32.270750",
          "invocation": {
            "module_args": {
              "_raw_params": "lxc config set \"bar69\" security.privileged true",
              "_uses_shell": true,
              "chdir": null,
              "creates": null,
              "executable": null,
              "removes": null,
              "warn": true
            },
            "module_name": "command"
          },
          "rc": 0,
          "start": "2017-01-10 18:01:32.217347",
          "stderr": "",
          "stdout": "",
          "stdout_lines": [],
          "warnings": []
        }
      },
      "task": {
        "id": "bc63ad6f-1808-48b8-a1de-729153d2b0c5",
        "name": "Promote to privileged ct"
      }
    }, {
      "hosts": {
        "lxc.server.com": {
          "_ansible_no_log": false,
          "_ansible_parsed": true,
          "actions": [
            "start"
          ],
          "addresses": {
            "eth0": [
              "10.0.3.188"
            ]
          },
          "changed": true,
          "invocation": {
            "module_args": {
              "architecture": null,
              "cert_file": "/root/.config/lxc/client.crt",
              "config": null,
              "description": null,
              "devices": null,
              "ephemeral": null,
              "force_stop": false,
              "key_file": "/root/.config/lxc/client.key",
              "name": "bar69",
              "profiles": null,
              "source": null,
              "state": "started",
              "timeout": 30,
              "trust_password": null,
              "url": "unix:/var/lib/lxd/unix.socket",
              "wait_for_ipv4_addresses": true
            },
            "module_name": "lxd_container"
          },
          "log_verbosity": 0,
          "old_state": "stopped"
        }
      },
      "task": {
        "id": "466c0da9-6cbf-4196-aea9-109218c3ed5f",
        "name": "Start CT"
      }
    }, {
      "hosts": {
        "lxc.server.com": {
          "_ansible_no_log": false,
          "_ansible_verbose_always": true,
          "changed": false,
          "invocation": {
            "module_args": {
              "msg": [
                "10.0.3.188"
              ]
            },
            "module_name": "debug"
          },
          "msg": [
            "10.0.3.188"
          ]
        }
      },
      "task": {
        "id": "978c490e-59c3-41d2-818d-ab4b557ad803",
        "name": ""
      }
    }]
  }],
  "stats": {
    "lxc.server.com": {
      "changed": 3,
      "failures": 0,
      "ok": 4,
      "skipped": 0,
      "unreachable": 0
    }
  }
};
document.addEventListener('DOMContentLoaded', function() {
  var hosts = _.pluck(jsonData.plays[0].tasks, 'hosts');
  var mapping = _.map(hosts, function(host) {
    var keys = _.keys(host);
    if (_.size(keys)) {
      var nestedHost = host[_.first(keys)];
      if (_.property('addresses')(nestedHost)) {
        if (_.property('eth0')(nestedHost.addresses)) {
          return nestedHost.addresses.eth0[0];
        }
      }
    }
  });
  document.getElementById('console').innerHTML = _.filter(mapping);
});
<script data-require="underscore.js@*" data-semver="1.8.3" src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
Address(es):
<div id="console"></div>
2
Sᴀᴍ Onᴇᴌᴀ 11 ene. 2017 a las 00:24

Si desea acceder directamente, intente lo siguiente:

JsonData.plays [0] .tasks [2] .hosts ["lxc.server.com"]. direcciones.eth0 [0]

Editar: Esto fue probado. La publicación que tiene tareas [3] es incorrecta.

1
Jose 11 ene. 2017 a las 00:05

Puede usar este código para recorrer las propiedades del objeto.

   for (key in jsonData){
       if(key == "eth0" ){
          console.log(jsonData[key].toString())
       }
    }
-1
Ahmed Kesha 10 ene. 2017 a las 23:47

Puedes hacer esto sin subrayar. Un enfoque que puede tomar es tomar la cadena de propiedad dada y una tarea, dividir la propiedad en función del deliminador (no puede usar '.' porque tiene propiedades punteadas como 'lxc.server.com') y examinar el objeto recursivamente hasta encuentra el valor (o no).

Nota: Las siguientes soluciones suponen que desea pasar una cadena de propiedad delimitada, pero puede pasar fácilmente una matriz de accesorios directamente y no ajustar la función auxiliar.

Solución recursiva cola-cail

var jsonData={plays:[{play:{id:"d10aae34-6713-4e14-8ad5-fa2fbf6aa2b5",name:"lxc"},tasks:[{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc copy base "bar69"',delta:"0:00:01.417533",end:"2017-01-10 18:01:28.692981",invocation:{module_args:{_raw_params:'lxc copy base "bar69"',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:27.275448",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"297bf7b7-9ee7-4517-8763-bc3b15baa6e2",name:"clone from base"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc config set "bar69" security.privileged true',delta:"0:00:00.053403",end:"2017-01-10 18:01:32.270750",invocation:{module_args:{_raw_params:'lxc config set "bar69" security.privileged true',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:32.217347",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"bc63ad6f-1808-48b8-a1de-729153d2b0c5",name:"Promote to privileged ct"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,actions:["start"],addresses:{eth0:["10.0.3.188"]},changed:!0,invocation:{module_args:{architecture:null,cert_file:"/root/.config/lxc/client.crt",config:null,description:null,devices:null,ephemeral:null,force_stop:!1,key_file:"/root/.config/lxc/client.key",name:"bar69",profiles:null,source:null,state:"started",timeout:30,trust_password:null,url:"unix:/var/lib/lxd/unix.socket",wait_for_ipv4_addresses:!0},module_name:"lxd_container"},log_verbosity:0,old_state:"stopped"}},task:{id:"466c0da9-6cbf-4196-aea9-109218c3ed5f",name:"Start CT"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_verbose_always:!0,changed:!1,invocation:{module_args:{msg:["10.0.3.188"]},module_name:"debug"},msg:["10.0.3.188"]}},task:{id:"978c490e-59c3-41d2-818d-ab4b557ad803",name:""}}]}],stats:{"lxc.server.com":{changed:3,failures:0,ok:4,skipped:0,unreachable:0}}};
  
function getNestedPropHelper(obj, [first, ...rest]) {
  // base case
  if (typeof obj !== 'object' || !obj) return undefined;
 
  return rest.length === 0                   // if we only have one property
    ? obj[first]                             // return the value
    : getNestedPropHelper(obj[first], rest); // otherwise recursively return the rest
}

function getNestedProp(obj, prop, delim = '|') {
  return getNestedPropHelper(obj, prop.split(delim));
}

// extract the tasks
const tasks = jsonData.plays.reduce((arr, play) => arr.concat(play.tasks), []);

// get the eth0 property for each task
const props = tasks.map(task => 
  getNestedProp(task, 'hosts|lxc.server.com|addresses|eth0')
);

// log eth0 properties for each task (only the third one actually has the value)
console.log(props);

También puede hacer esto de forma iterativa, que generalmente debería ser más rápido (aunque no mucho en entornos que admiten llamadas de cola):

Solución iterativa

var jsonData={plays:[{play:{id:"d10aae34-6713-4e14-8ad5-fa2fbf6aa2b5",name:"lxc"},tasks:[{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc copy base "bar69"',delta:"0:00:01.417533",end:"2017-01-10 18:01:28.692981",invocation:{module_args:{_raw_params:'lxc copy base "bar69"',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:27.275448",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"297bf7b7-9ee7-4517-8763-bc3b15baa6e2",name:"clone from base"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc config set "bar69" security.privileged true',delta:"0:00:00.053403",end:"2017-01-10 18:01:32.270750",invocation:{module_args:{_raw_params:'lxc config set "bar69" security.privileged true',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:32.217347",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"bc63ad6f-1808-48b8-a1de-729153d2b0c5",name:"Promote to privileged ct"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,actions:["start"],addresses:{eth0:["10.0.3.188"]},changed:!0,invocation:{module_args:{architecture:null,cert_file:"/root/.config/lxc/client.crt",config:null,description:null,devices:null,ephemeral:null,force_stop:!1,key_file:"/root/.config/lxc/client.key",name:"bar69",profiles:null,source:null,state:"started",timeout:30,trust_password:null,url:"unix:/var/lib/lxd/unix.socket",wait_for_ipv4_addresses:!0},module_name:"lxd_container"},log_verbosity:0,old_state:"stopped"}},task:{id:"466c0da9-6cbf-4196-aea9-109218c3ed5f",name:"Start CT"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_verbose_always:!0,changed:!1,invocation:{module_args:{msg:["10.0.3.188"]},module_name:"debug"},msg:["10.0.3.188"]}},task:{id:"978c490e-59c3-41d2-818d-ab4b557ad803",name:""}}]}],stats:{"lxc.server.com":{changed:3,failures:0,ok:4,skipped:0,unreachable:0}}};
  
function getNestedPropHelper(obj, props) {
  const isObject = (obj) => typeof obj === 'object' && obj;
  if (!isObject(obj)) return undefined;

  // keep extracting the properties
  for (const prop of props) {
    obj = obj[prop];
    // of we come across a non-object property before we're done, the property path is invalid
    if (!isObject(obj)) return undefined;
  }

  // if we reached this point, we found the value
  return obj;
}

function getNestedProp(obj, prop, delim = '|') {
  return getNestedPropHelper(obj, prop.split(delim));
}

// extract the tasks
const tasks = jsonData.plays.reduce((arr, play) => arr.concat(play.tasks), []);

// get the eth0 property for each task
const props = tasks.map(task => 
  getNestedProp(task, 'hosts|lxc.server.com|addresses|eth0')
);

// log eth0 properties for each task (only the third one actually has the value)
console.log(props);

Solución recursiva al curry se puede tomar el mismo enfoque para la iterativa

También puede curry la función para que pueda crear getters para ciertas rutas de propiedad.

var jsonData={plays:[{play:{id:"d10aae34-6713-4e14-8ad5-fa2fbf6aa2b5",name:"lxc"},tasks:[{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc copy base "bar69"',delta:"0:00:01.417533",end:"2017-01-10 18:01:28.692981",invocation:{module_args:{_raw_params:'lxc copy base "bar69"',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:27.275448",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"297bf7b7-9ee7-4517-8763-bc3b15baa6e2",name:"clone from base"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,changed:!0,cmd:'lxc config set "bar69" security.privileged true',delta:"0:00:00.053403",end:"2017-01-10 18:01:32.270750",invocation:{module_args:{_raw_params:'lxc config set "bar69" security.privileged true',_uses_shell:!0,chdir:null,creates:null,executable:null,removes:null,warn:!0},module_name:"command"},rc:0,start:"2017-01-10 18:01:32.217347",stderr:"",stdout:"",stdout_lines:[],warnings:[]}},task:{id:"bc63ad6f-1808-48b8-a1de-729153d2b0c5",name:"Promote to privileged ct"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_parsed:!0,actions:["start"],addresses:{eth0:["10.0.3.188"]},changed:!0,invocation:{module_args:{architecture:null,cert_file:"/root/.config/lxc/client.crt",config:null,description:null,devices:null,ephemeral:null,force_stop:!1,key_file:"/root/.config/lxc/client.key",name:"bar69",profiles:null,source:null,state:"started",timeout:30,trust_password:null,url:"unix:/var/lib/lxd/unix.socket",wait_for_ipv4_addresses:!0},module_name:"lxd_container"},log_verbosity:0,old_state:"stopped"}},task:{id:"466c0da9-6cbf-4196-aea9-109218c3ed5f",name:"Start CT"}},{hosts:{"lxc.server.com":{_ansible_no_log:!1,_ansible_verbose_always:!0,changed:!1,invocation:{module_args:{msg:["10.0.3.188"]},module_name:"debug"},msg:["10.0.3.188"]}},task:{id:"978c490e-59c3-41d2-818d-ab4b557ad803",name:""}}]}],stats:{"lxc.server.com":{changed:3,failures:0,ok:4,skipped:0,unreachable:0}}};
  
function getNestedPropHelper(obj, [first, ...rest]) {
  // base case
  if (typeof obj !== 'object' || !obj) return undefined;
 
  return rest.length === 0                   // if we only have one property
    ? obj[first]                             // return the value
    : getNestedPropHelper(obj[first], rest); // otherwise recursively return the rest
}

function getNestedProp(prop, delim = '|') {
  const props = prop.split(delim);
  return function(obj) {
    return getNestedPropHelper(obj, props);
  }
}

// now you have a getter that will extract eth0 for any task
const getEth0 = getNestedProp('hosts|lxc.server.com|addresses|eth0');

// extract the tasks
const tasks = jsonData.plays.reduce((arr, play) => arr.concat(play.tasks), []);

// extract eth0 from each task
const props = tasks.map(getEth0);

// log eth0 properties for each task (only the third one actually has the value)        
console.log(props);
2
nem035 24 oct. 2017 a las 17:54